A 20 Gal Flask Weighs 4

A 2.0 gal flask weighs 4.0 lbs when empty.When it is filled with liquid,the flask weighs 4536.0 g.What is the density of the liquid in g/mL? (1 gal = 3.785 L,1 lb = 453.6 g)

A) 0.36 g/mL
B) 0.72 g/mL
C) 0.60 g/mL
D) 0.14 g/mL
E) 0.071 g/mL